Start learning 50% faster. Sign in now
Let the speeds of boats ‘A’ and ‘B’ in still water be 8x km/hr and 9x km/hr Therefore, speed of the current = 0.25 × 8x = 2x km/hr According to the question, 8x + 2x = 500/10 Or, 10x = 50 Or, x = 5 Therefore, upstream speed of boat ‘B’ = 9x – 2x = 7x = 35 km/hr Downstream speed of boat ‘B’ = 9x + 2x = 11x = 55 km/hr Required time taken = (70/35) + (275/55) = 2 + 5 = 7 hours
What is used in nuclear reactor as a moderator. It is also known as Heavy Water?
Which of the following is the minimum age to become member of Lok Sabha?
Who among the following is NOT appointed by the State Governor?
Which of the following is Provisional Parliament of India?
When was planning commission of INDIA formed?
The constitutional head of the state” governor” is appointed by
Which sequence correctly orders these Indian Prime Ministers chronologically?
Who was the inaugural Speaker of the Lok Sabha in India?
What is the minimum age required to become the Vice President of India?
Who acts as the Ex-officio chairman of the Rajya Sabha?